Sliding-door mounting.



G. MELDAU.

SLIDING DOOR MOUNT-ING.

APPLICATION FILED 11111121, 1913.

1,069,277.. v Patented Aug. 5, 1913.

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eus'rav MELDAU, or ooLo'eN-E, GERMANY.

To all 'wh-omxz't may concern:

. Application mea may 2'1, 1913. serial No. 768,997.

'Be it known that I, GUsTAv MnLDAUa Asubject of t-he King of Prussia, and residing at Cologne-on-t-he-Rhine, in the Province of the Rhine, Kingdom of Prussia, German Empire, have invented a certain new and "useful Sliding-Dor Mounting, of which the following is a specification.

The invention relates to mountings for sliding doors and the like and makes use of a, device`in the lower edge ofthe door, comprising channels opening downward and which are about one fourth of the length of the movement of the door. These channels are adapted to receive. a bearing ballv upon which the door is to run. The "invention also uses the arrangement of a leaf spring mounted in 'each of the channels serving to operate on the bearing ball from above as a brake.

The accompanying drawings show an ex ample of construction according to the invent-ion.

Figure l is a view on a small scale partlyv in vertical section o f the lower edge of a door formed according to this invention.

Fig. 9, is a cross section of the rail u on' which the bearing balls run. Figs. 3 and 4 are longitudinal and cross section, respectively of the bearing arran ement on a large scale. Fig. 5 is a view o? the device from below, while Fig. 6 illustrates diagrammatically the formation of the bearing channel in the construction illustrated.

In the lower edge of the door a, the two ball channels b xwhich are open at their lower sides are inserted and fixed by screws., A spring c is mounted along the wholer length of each channel b and is only supported at its two ends. When the door 1s pushedsidewise the ball d runs to and fro in the channel Z; under the-- spring c upon the grooved rail e fixed tothe, floor under-- neath the door. The channels are xedto the wood of the door by screwsv and the grooved rails e are fastened tot e bottom by screws g. f

The ball channels b are trapezoidal in cross section so that their side walls lg. slope away from their tops b and/thus diverge toward the open lower sides. The space-between the two walls at the top of the channel is so designed that the greatest horizontal diameter of the ball a? is within the channelso that the ball is guided in the chanspecineation of Letters Patent.

Patented Aug. 5, I1913.

'nel on the inside of the sloping walls L close to the lower longitudinal edges thereof and 1s thus prevented from escapingl The spring c'withln the channel presses'elasi tically downward upon,l the ball alongthe whole of -its path a'nd therefore the ball cannot grind between the two walls nor stick fast, but instead runs freely and easily.

The spring must be mounted 'at its ends so that it is free and elastic at all points at which theball presses against it. For that reason, the ends of the spring extend slightly farther outward' beyond the projections for limiting the path of the ball. The projectlons must therefore be arranged a little in- `side the ends of the channel; the projections can obviously be made asdesired, for example, they may be small pins driven .in or,

screwed into the top or side wallsfof the channels` or they may be formedas projecf tions or tongues bent -or pressed inward from the walls, #The end of the spring suitably shaped for example bent over can besimply inserted under such a tongue on the top of the channel or lunder a projecting pin standing out in the channel.

In the drawing a special simple arrangement is illustrated. Fig. 6 shows -a blank of a channel made from sheet iron. The walls h are-formed -by bending up the side strips along the dotted lines.v The ends of this blank are stamped out to form two'. ears with sloping corners k, on the inward edges of the ears, as is shown in Fig.. 6. The ears i are folded up along the cross dot ted lines of Fig. 6, land also bent slightly inward, as shown in Figs. 3 and 5. The opposing blunt ends of the ears form an angle projecting from the end 'into the channe against the point of which, serving as a stop,'the ball-d strikes. Q The sloping corners of the ears .being bent into the channel leave a space of suitable breadth and height, into which the bent end Z, of the. spring c maybe inserted, between the projections i, and the top of the channel, as seenin Fig.V 3.y l' l Having now described iyinventiomwhat I claim and .desire to secure by Letters Patent, is

A' sldi door mounting comprising a recess exten lng upward from the lower edge of the door, a channel with side walls diverging downwardly in said recess, a bearf ing ball in said channel, ears on said chan-v 2 nonno?? nel forming ball. stops, a downwardly cui-ved nmne. to, this specification in the presence of l leaf spring lextending lengthwise of said two subscribing witnesses. channel :md in the'upper zut thereofto control the movement of the all, und mea-ns GUSTAV MELDAU' 5 to secure the ends of said spring aLt the ends. Witnesses:

.of said channels. L Loms' VANnoR-Y, In testlmony, whereof have signed my Bnssm F. DUNLAP.. 

